This warranty is valid only in the
United States.
For customers in the United States
Owner’s Record
The model number is located at the bottom and the serial
number is located inside the battery compartment. Record
these numbers in the spaces provided below. Refer to these
numbers whenever you call upon your Sony dealer
regarding this product.
Model No. Serial No.
You are cautioned that any changes or modifications not
expressly approved in this manual could void your authority
to operate this equipment.
WARNING
To prevent fire or shock hazard, do not
expose the unit to rain or moisture.
M-637V/635VK/630V/
535V/530V/430
Operating Instructions
Sony Corporation © 1999 Printed in China
3-865-285-72 (1)
Precautions
On power
•Operate the unit only on 3 V DC.
For AC operation, use the AC adaptor recommended for the
unit. Do not use any other type. For battery operation, use two
size AA (R6) batteries.
On the unit
•Use only the (standard microcassettes) with this
unit. Non-standard cassettes cannot be used because their “L”
dimension (see illustration) is different.
Troubleshooting
Should any problem persist after you have made these checks,
consult your nearest Sony dealer.
A cassette cannot be inserted.
t The cassette is being inserted in the wrong way.
t n has been already pressed.
Playback cannot be made.
t The tape has reached the end. Rewind the tape.
t The batteries are weak. Replace both batteries with new
ones.
t The head is contaminated.
Recording cannot be made.
t There is no cassette in the cassette compartment.
t The cassette tab has been removed.
t The batteries are weak. Replace both batteries with new
ones.
t The head is contaminated.
t Improper setting of the VOR switch (M-637V/635VK/
630V/535V/530V only).
Recording is interrupted.
t The VOR switch (M-637V/635VK/630V/535V/530V
only) is set to H or L. When you do not use VOR, set it to
OFF.
During CUE/REVIEW the tape stops or does not run.
You cannot fast-forward or rewind.
t The batteries are weak. Replace both batteries with new
ones.
The unit does not operate.
t The batteries have been inserted with incorrect polarity.
t The batteries are weak. Replace both batteries with new
ones.
t>PAUSE is slid in the direction of the arrow.
t The AC power adaptor is connected to the unit only and
you are going to use the unit on batteries.
No sound comes from the speaker.
t The earphone is plugged in.
t The volume is turned down completely.
The sound drops out or comes with excessive noise.
t The volume is turned down completely.
t The batteries are weak. Replace both batteries with new
ones.
t The head is contaminated. See “Maintenance”.
Tape speed is too fast or too slow in the playback
mode.
t Improper setting of the TAPE SPEED switch. Set it to the
same speed as that used for recording.
Tape speed is faster than the normal playback speed.
t The FAST PB switch (M-637V/635VK/630V only) is slid
in the direction of the arrow.
Recording cannot be erased completely.
t The head is contaminated.
Maintenance
To clean the tape head and path
Press n and wipe the head, capstan and the pinch roller with a
cotton swab, moistened with alcohol every 10 hours of use.
To clean the exterior
Use a soft cloth slightly moistened in water. Do not use alcohol,
benzine or thinner.
Specifications
Tape
(normal position type)
Recording system
2-track 1-channel monaural
Speaker
Approx. 3.6 cm (1
7
⁄16 in.) dia.
Tape speed
2.4 cm/s (
15
⁄16 ips), 1.2 cm/s (
15
⁄32 ips)
Frequency range
300 - 4,000 Hz (with TAPE SPEED switch at 2.4 cm/s)
Input (M-637V/635VK/630V only)
Microphone input jack (minijack/PLUG IN POWER)
sensitivity 0.24 mV for 3 kilohms or lower impedance microphone
Output
Earphone jack (minijack) for 8 - 300 ohms earphone
Power output (at 10% harmonic distortion)
M-637V/635VK/630V/535V/530V 250 mW
M-430 160 mW
Power requirements
3 V DC batteries size AA (R6) × 2/External DC 3V power sources
Dimensions (w/h/d)
Approx. 62.2 × 121.5 × 24.3 mm (2
1
⁄2 × 4
7
⁄8 ×
31
⁄32 in.) incl. projecting
parts and controls
Mass
Approx. 125 g (4.5 oz)
Supplied accessories
AC power adaptor (1) (M-635VK only)
Battery charge adaptor (1) (M-635VK only)
Rechargeable batteries NC-AA, 1.2 V, 600 mAh, Ni-Cd (2) (M-635VK
only)
Microcassette tape MC-30 (1) (M-637V for the United States, M-630V/
535V/530V/430 for Europe and M-430(S) only)
Batteries R6P (SR) (2) (M-630V for Europe and M-530V “Sony World
Model” only)
Alkaline batteries LR6 (SG) (2) (M-637V for the United States only)
Carrying pouch (1) (M-637V for the United States, M-630V for Europe
and M-530V “Sony World Model” only)
Microphone (1) (M-637V for the United States only)
Design and specifications are subject to change without notice.
Pinch roller
Standard
Only standard microcassettes
have a small indention of side A.
Non-standard
Approx. 5 mm
Approx. 2.5 mm
•Do not leave the unit in a location near heat sources, or in a
place subject to direct sunlight, excessive dust or mechanical
shock.
•Should any solid object or liquid fall into the unit, remove the
batteries or disconnect the AC power adaptor, and have the
unit checked by qualified personnel before operating it any
further.
•Keep personal credit cards using magnetic coding or spring-
wound watches etc. away from the unit to prevent possible
damage from the magnet used for the speaker.
•When you do not use the unit for long, remove the batteries to
avoid damage caused by battery leakage and subsequent
corrosion.
•If the unit has not been used for long, set it in the playback
mode and warm it up for a few minutes before inserting a
cassette.
For the customers in the USA and Canada
RECYCLING NICKEL-CADMIUM BATTERIES
Nickel-Cadmium batteries are recyclable. You can
help preserve our environment by returning your
unwanted batteries to your nearest point for
collection, recycling or proper disposal.
Note: In some areas the disposal of nickel-
cadmium batteries in household or
business trash may be prohibited.
RBRC (Rechargeable Battery Recycling Corporation) advises you
about spent battery collection by the following phone number.
Call toll free number: 1-800-822-8837 (United States and
Canada only)
Caution: Do not handle damaged or leaking nickel-cadmium
batteries.
If you have any questions or problems concerning your unit,
please consult your nearest Sony dealer.
Capstan
Head
Recording/Playback with the
Connected Equipment
Dubbing onto another tape recorder
Connect another tape recorder to the EAR jack using the RK-
G64HG connecting cord (not supplied) (For “Sony World
Model” : in Japan, use the RK-G64, not supplied).
Set this unit to the playback mode and another tape recorder to
the recording mode.
Recording from another tape recorder
(M-637V/635VK/630V only)
Connect another tape recorder to the MIC jack using the RK-
G64HG connecting cord (not supplied) (For “Sony World
Model” : in Japan, use the RK-G64, not supplied).
Set this unit to the recording mode and another tape recorder to
the playback mode. In this case set VOR to OFF.
Recording with an External Microphone
(M-637V/635VK/630V only)
Connect a microphone to the MIC jack.
M-637V for the United States : use the supplied microphone.
Other models : use a microphone of low impedance (less than 3
kilohoms) such as ECM-T115 (not supplied). When using a plug-
in-power system microphone, the power to the microphone is
supplied from this unit.
Note
When recording with an external microphone, the VOR system may not
work properly because of the difference in sensitivity.
Microcassette
™
-Corder
About This Manual
The instructions in this manual are for 5 models. The M-635VK
is the model used for illustration purposes.
Their differences are shown in the table below:
M-635VK M-637V/630V M-535V M-530V M-430
TAPE COUNTER aaaa—
MIC jack aa———
BATT lamp aaaaa
(BATT (BATT (REC/ (REC/
lamps) lamps) BATT) BATT)
REC lamp aaaa—
(REC (REC (REC/ (REC/
lamp) lamp) BATT) BATT)
VOR aaaa—
FAST PB aa———
Handstrap aaaa
—
a: provided or supplied —: not provided or not supplied
Notes
• The unit will play back normally for a while, even after the E lamp
flashes. However, replace the batteries as soon as you can. If you do not,
the playback cannot be made with normal sound, noise may be
recorded and the recorded sound will not be loud enough (M-637V/
635VK/630V only).
• In the following cases you do not need to replace the batteries:
– if the REC/BATT or BATT lamp, or BATT lamps flash with the
playback sound when you turn up the volume.
– if the E lamp lights momentarily when the tape starts running or at
the end of the tape (M-637V/635VK/630V only).
– if the E lamp flashes during FF (CUE) or REW (REVIEW)
(M-637V/635VK/630V only).
Battery life (Approx. hours) (EIAJ*)
Batteries Recording
Sony manganese R6P (SR) 7
Sony alkaline LR6 (SG) 24
NC-AA (M-635VK only) 6.5
* Measured valued by the standard of EIAJ (Electronic Industries
Association of Japan) (Using a Sony Microcassette)
Note
The battery life may shorten depending on the operation of the unit.
House current
Connect the AC power adaptor to DC IN 3V and to a wall outlet.
Use the AC power adaptor (supplied with M-635VK only) or the
AC-E30HG AC power adaptor (not supplied) (For “Sony World
Model”: in Japan, use the AC-E30M, not supplied). Do not use
any other AC power adaptor.
Note
Specifications for AC-E30HG vary for each area. Check your local voltage
and the shape of plug before purchasing.
Rechargeable batteries (supplied with
M-635VK only)
Charge the rechargeable batteries only with the supplied charge
adaptor and the AC power adaptor. The rechargeable batteries
can be charged approximately 500 times.
Be sure to charge the rechargeable batteries for approximately 8
hours before using them. The unit can be used for recording for
approximately 6.5 hours with the fully charged rechargeable
batteries.
To charge
The power indictor of the charge adaptor remains lit as long as power is
supplied from the wall outlet.
To use
Notes
• Use the supplied two rechargeable batteries only with the supplied
charge adaptor.
• If there is distortion of sound or excessive noise, or if the unit does not
operate properly, turn off the unit and recharge the two rechargeable
batteries together.
• The rechargeable batteries will discharge even when not in use. Be sure
to charge them before use.
• Recharge the two rechargeable batteries together. Otherwise, the
charging cannot be done.
• Be sure to remove the rechargeable batteries from the charge adaptor to
avoid overcharging (more than 20 hours) when charging has been
completed.
• Charging and operation should be made in temperature ranges 5°C to
40°C (40°F to 104°F).
• The charge adaptor will become warm during charging but this is not a
sign of problem.
• Do not use or leave the charge adaptor in a location near heat sources or
in a place subject to direct sunlight or excessive moisture.
• Unplug the AC power adaptor from the wall outlet when it is not to be
used for long.
• Do not attempt to charge dry batteries.
Playing a Tape
1 Press the reset button of the TAPE COUNTER
(M-637V/635VK/630V/535V/530V only).
2 Press xZ and insert a standard microcassette with the side
to start recording facing the lid.
3 Select the desired tape speed.
2.4 cm for optimum sound (recommended for normal use):
A 30-minute recording can be made using both sides of the
MC-30 microcassette.
1.2 cm for longer recording time: A 60-minute recording can
be made using both sides of the MC-30 microcassette.
4 Set VOR to H, L or OFF (M-637V/635VK/630V/535V/530V
only).
If you set VOR to H or L, the unit automatically starts
recording the sound and pauses when there is no sound
(you can save tapes and batteries).
H: To record at meeting or in a quiet and/or spacious place.
L: To record for dictation or in a noisy place.
When the sound is not loud enough, set it to OFF, or the unit
may not start recording.
5 Press z.
n is pressed simultaneously and recording starts. While
the tape runs, the REC lamp or REC/BATT lamp lights and
flashes depending on the strength of the sound (M-637V/
635VK/630V/535V/530V only).
Recording level is fixed.
to the wall outlet
Rechargeable
batteries NC-AA
Power indicator
Charge adaptor
AC power
adaptor
Polarity of the plug
to the wall outlet
Preparing Power Sources
Choose one of the following power sources.
Dry Batteries
Make sure that nothing is connected to the DC IN 3V jack.
1 Open the battery compartment lid.
2 Insert two size AA (R6) batteries with correct polarity and
close the lid.
To take out the batteris
If the battery compartment lid is accidentally
detached
Attach it as illustrated.
When to replace the batteries
For M-535V/530V/430
Replace the batteries with new ones when the REC/BATT
(M-535V/530V) or BATT (M-430) lamp dims.
For M-637V/635VK/630V
Replace the batteries with new ones when the BATT lamps go
off and the E lamp flashes.
The BATT lamps change as illustrated:
light
When batteries are new
Replace batteries
When batteries become weak
light
go off
go off
To
Stop recording
Start recording during playback
Review the portion just recorded
Pause recording
Take out a cassette
Note
Select the 2.4 cm tape speed for recording, if you play back the recorded
tape with another unit. Otherwise, the sound quality may be changed.
Notes on VOR (Voice Operated Recording) (M-637V/635VK/
630V/535V/530V only)
• The VOR system depends on the environmental conditions. If you
cannot get the desired results, set VOR to OFF.
• When you use the system in a noisy place, the unit will stay in the
recording mode. If the sound is too soft, on the contrary, the unit will
not start recording. Set VOR to H (high) or L (low) depending on the
conditions.
To monitor the sound
Connect an earphone (not supplied) to EAR jack. The monitor
volume cannot be adjusted by VOL.
To prevent a cassette from being accidentally recorded
over
Break out and remove the cassette tabs. To reuse the cassette for
recording, cover the tab hole with adhesive tape.
Press or slide
xZ
z during playback (the unit becomes in
the recording mode)
Push up mCUE/MREVIEW toward
MREVIEW during the recording.
Release the button at the point to start
playback.
Slide >PAUSE in the direction of the
arrow. The REC/BATT (M-535V/
530V), BATT (M-430) or REC lamp (M-
637V/635VK/630V) goes off.
xZ
1 Insert a cassette with the side to start playing facing the lid.
2 Select the tape speed to the same speed as that used for
recording.
3 Press n.
4 Adjust the volume.
To
Stop playback/stop fast
forward or rewind*
Pause playback
Fast forward
Rewind
Search forward during
playback (CUE)
Search backward during
playback (REVIEW)
* If you leave the unit after the tape has been wound or rewound, the
batteries will be consumed rapidly. Be sure to depress xZ.
Note
If the tape is completely wound or rewound while searching forward/
backward during playback (CUE/REVIE), the mCUE/MREVIEW
switch may not return to the center position when you release the switch.
In this case, push back the switch to the center to start playback.
If you plug in headphones (not supplied) to the EAR jack, you
will get monaural output from both left and right channels.
To increase the playback speed (M-637V/635VK/630V
only)
Slide the FAST PB switch in the direction of the arrow. The
playback speed will be increased.
To return to the original speed, slide the FAST PB switch to the
original position.
At the end of the tape
In the recording or playback mode, the tape stops at the end of
the tape and the locked buttons will be released automatically
(Automatic shut-off mechanism).
After fast forward or rewind, be sure to set mCUE/
MREVIEW back to the center.
Press or slide
xZ
Slide >PAUSE in the direction of the
arrow. The REC/BATT (M-535V/530V) or
BATT (M-430) lamp, or BATT lamps (M-
637V/635VK/630V) go off.
Slide mCUE/MREVIEW toward mCUE
during stop.
Slide mCUE/MREVIEW toward
MREVIEW during stop.
Keep mCUE/MREVIEW pushed down
during playback and release it at the point
you want.
Keep mCUE/MREVIEW pushed up
during playback and release it at the point
you want.
Recording
Make sure that nothing is connected to MIC (M-637V/635VK/
630V only).
BATT
BATT
BATT
flash
1
2
Microphone
REC lamp
z
> PAUSE
m CUE/
REVIEW M
xZ
EAR
VOR
BATT
TAPE SPEED
MIC (PLUG IN
POWER)
TAPE COUNTER
EAR
VOL
n
> PAUSE
FAST PB
m CUE/
REVIEW M
xZ
BATT
TAPE SPEED
AC power adaptor (supplied with M-635VK only)
Insert the # side
first for each
battery.
Insert the # side
first for each
battery.
xZ
-
1
-
2
